I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
skimos skims sigmas squamose squamous scams scums
skimos cameos squamous skims camos combos comose comous gombos gumbos gummose gummous agamous bigamous hakims oakmoss oogamous requiems squamose digamous